Trio Pro Pilot Manual 4.1
51
as shown.
To set the servo direction, perform the following steps:
1. Select
the
CONFIGURATION SETTINGS
menus as detailed previously
2. Press and release the
H MODE
button. The arrow
will be placed at the polarity field (
NM
or
RV
)
3. Press and release the
V NAV
servo button. The
servo will drive to it's zero position
4. Rotate the encoder knob clockwise. Observe that the
elevators move in a direction that will cause the
airplane to climb.
5. If this is correct, proceed to step 7. If not, continue
6. Press and release the encoder knob. Observe that
the servo drives back to center and the
DIR
field
changes to the opposite polarity
RV
(
NM
). Repeat steps 4 and 5
7. Press and release the
H MODE
button. Record the polarity for future reference.
The
VNAV SERVO SET
is complete and the encoder can now be used to select another menu screen.
Press the H MODE button to remove the arrow.
Once the servo direction is set correctly, the result is stored in non-volatile memory and need not be
adjusted again.
NOTE
: As a safeguard, the servo direction cannot be set while airborne. Some parameters in the
CONFIGURATION
menu cannot be accessed when there is airspeed or GPS groundspeed
present.
Initial Setup of the Horizontal Navigation Servo
The
HNAV SERVO SET
menu screen allows setting both the servo zero position and the direction of
rotation of the
H NAV
servo. The proper direction of rotation of the servo and the initial zero point must
be assured
Initially the screen will appear as shown. 7500 is a reference
number denoting the servo center position. Limits of these
reference only numbers are 6000 to 9000.
To set the
H NAV
servo zero position and direction, perform the following steps:
1. Enter
the
CONFIGURATION SETTINGS
menus as detailed previously and select the
HNAV
SERVO SET
menu.
2. Press and release the
H MODE
button. The arrow will be placed at the direction
3. Press and release the
HNAV
servo button. The servo will now drive to its mechanical zero
position and the display will read the factory setting of 7500.
4. Rotate the encoder knob clockwise. Observe that the
H NAV
servo moves in a direction that will
cause the airplane to turn to the right.
5. If this is correct, proceed to step 7. If not, continue
6. Press and release the encoder knob. Observe the direction field changes to the opposite
polarity
RV
(
NM
). Repeat steps 4 and 5
7. Rotate the encoder to a setting that puts the ailerons in their normal, in-flight neutral position.
Record this number and the polarity for future reference.
8. Press and release the
H MODE
button.
The
HNAV SERVO SET
procedure is complete and the encoder can now be used to select another
menu screen. Once these servo directions are set, the result is stored in non-volatile memory and need
not be adjusted again.